The feudal state was one in which, as it has been said, private law had usurped the place of public law.
Turgeis himself is reported to have usurped the abbacy of Armagh.
After a year of zealous work as preacher and director he was sent by the bishop, Claude de Granier, to try and win back the province of Chablais, which had embraced Calvinism when usurped by Bern in 1535, and had retained it even after its restitution to Savoy in 1564.
But when Greek deities were introduced into Rome on the advice of the Sibylline books (in 495 B.C., on the occasion of a severe drought), Demeter, the Greek goddess of seed and harvest, whose worship was already common in Sicily and Lower Italy, usurped the place of Ceres in Rome, or rather, to Ceres were added the religious rites which the Greeks paid to Demeter, and the mythological incidents which originated with her.
The functions of Caesar's Druids we here find distributed amongst Druids, bards and poets (fili), but even in very early times the poet has usurped many of the duties of the Druid and finally supplants him with the spread of Christianity.